:root {
  --primary-color: #4a6cf7;
  --primary-light: #eef1ff;
  --primary-dark: #3951c6;
  --secondary-color: #6e42e5;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --dark-color: #394053;
  --gray-color: #f8f8fa;
  --text-color: #333;
  --light-text: #8a94a6;
  --white: #ffffff;
  --shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  --radius: 12px;
  --bg-color: #f9fbfd;
  --card-bg: #ffffff;
  --border-color: #e0e0e0;
  --error-color: #dc3545;
  --info-color: #17a2b8;
  --header-height: 70px;
  --sidebar-width: 280px;
  --sidebar-collapsed-width: 80px;
  --box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  --border-radius: 12px;
  --transition: all 0.3s ease;
}

/* Dark mode variables */
[data-theme="dark"] {
  --primary-color: #5d7bf9;
  --primary-light: #2a2d43;
  --secondary-color: #8659ff;
  --text-color: #f0f0f0;
  --light-text: #b8c2cc;
  --bg-color: #121212;
  --card-bg: #1e1e1e;
  --border-color: #333;
  --box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  --gray-color: #2a2a2a;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  padding-top: var(--header-height);
}

header {
  background-color: var(--card-bg);
  box-shadow: var(--box-shadow);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 1000;
  transition: var(--transition);
}

.header-left {
  display: flex;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  margin-left: 10px;
}

.logo a {
  color: var(--primary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo i {
  margin-right: 10px;
}

.navigation {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  margin-left: 25px;
}

.nav-links a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  display: flex;
  align-items: center;
}

.nav-links a i {
  margin-right: 8px;
}

.nav-links a:hover {
  color: var(--primary-color);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-menu {
  position: relative;
  margin-left: 20px;
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--primary-color);
  background-image: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.user-avatar:hover {
  transform: scale(1.05);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 250px;
  background-color: var(--card-bg);
  box-shadow: var(--box-shadow);
  border-radius: var(--border-radius);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
}

.dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-info {
  padding: 20px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.user-info h3 {
  font-size: 1.1rem;
  margin-bottom: 5px;
}

.dropdown-links {
  list-style: none;
}

.dropdown-links li a {
  padding: 15px;
  display: flex;
  align-items: center;
  color: var(--text-color);
  text-decoration: none;
  transition: var(--transition);
}

.dropdown-links li a i {
  margin-right: 15px;
  width: 20px;
  text-align: center;
  color: var(--primary-color);
}

.dropdown-links li a:hover {
  background-color: var(--primary-light);
}

[data-theme="dark"] .dropdown-links li a:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

/* Theme Toggle */
.theme-toggle {
  width: 50px;
  height: 26px;
  background-color: var(--gray-color);
  border-radius: 30px;
  position: relative;
  margin: 0 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6px;
  transition: var(--transition);
}

.theme-icon {
  font-size: 14px;
  color: var(--light-text);
  z-index: 1;
}

.theme-icon.light {
  color: #ffc107;
}

.theme-icon.dark {
  color: #6e42e5;
}

.theme-toggle::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: white;
  top: 3px;
  left: 3px;
  transition: var(--transition);
}

.theme-toggle.active {
  background-color: var(--dark-color);
}

.theme-toggle.active::after {
  transform: translateX(24px);
  background-color: var(--primary-dark);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.karta {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 25px;
  margin-bottom: 25px;
  transition: var(--transition);
}

.karta h1 {
  font-size: 1.8rem;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.karta h2 {
  font-size: 1.4rem;
  margin-bottom: 15px;
  margin-top: 25px;
}

h1 {
  color: var(--dark-color);
  margin-bottom: 20px;
  font-weight: 600;
  font-size: 28px;
}

h2 {
  color: var(--dark-color);
  margin-bottom: 15px;
  font-weight: 600;
  font-size: 22px;
}

.formularz-grupa {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--dark-color);
}

input, select, textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: var(--card-bg);
  color: var(--text-color);
  font-size: 16px;
  transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(74, 108, 250, 0.1);
}

input[type="file"] {
  width: 0.1px;
  height: 0.1px;
  opacity: 0;
  overflow: hidden;
  position: absolute;
  z-index: -1;
}

input[type="file"] + label {
  display: inline-block;
  padding: 12px 15px;
  background-color: var(--primary-color);
  color: white;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  font-weight: normal;
}

input[type="file"] + label:hover {
  background-color: var(--secondary-color);
}

.nazwa-pliku {
  margin-top: 10px;
  font-size: 0.9rem;
  color: #666;
}

[data-theme="dark"] .nazwa-pliku {
  color: #aaa;
}

.przycisk {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  text-align: center;
  transition: var(--transition);
}

.przycisk:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
}

.przycisk-usun {
  background-color: var(--error-color);
}

.przycisk-usun:hover {
  background-color: #c82333;
}

.blad, .sukces, .alert-info {
  padding: 15px;
  border-radius: var(--border-radius);
  margin-bottom: 20px;
}

.blad {
  background-color: rgba(220, 53, 69, 0.1);
  color: var(--error-color);
  border: 1px solid rgba(220, 53, 69, 0.3);
}

.sukces {
  background-color: rgba(40, 167, 69, 0.1);
  color: var(--success-color);
  border: 1px solid rgba(40, 167, 69, 0.3);
}

.alert-info {
  background-color: rgba(23, 162, 184, 0.1);
  color: var(--info-color);
  border: 1px solid rgba(23, 162, 184, 0.3);
}

.pliki-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  grid-gap: 20px;
  margin-top: 30px;
}

.plik-karta {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 15px;
  position: relative;
  transition: var(--transition);
}

.plik-karta:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.plik-ikona {
  font-size: 2rem;
  margin-bottom: 10px;
  text-align: center;
}

.plik-nazwa {
  font-weight: 500;
  margin-bottom: 15px;
  word-break: break-word;
  text-align: center;
}

.plik-akcje {
  display: flex;
  justify-content: space-around;
}

.plik-akcje a {
  padding: 8px 12px;
  font-size: 0.9rem;
}

.szczegoly-pliku {
  padding: 20px;
  background-color: rgb(255, 255, 255);
  border-radius: var(--border-radius);
}

[data-theme="dark"] .szczegoly-pliku {
  background-color: rgba(255, 255, 255, 0.02);
}

.info-lista {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 15px;
}

.info-lista dt {
  font-weight: bold;
}

.akcje {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.wyszukiwarka {
  margin-bottom: 20px;
}

.filtry {
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 15px;
}

.link-container {
  display: flex;
  margin: 10px 0;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
}

#link-udostepniania {
  flex-grow: 1;
  padding: 10px;
  background: var(--gray-color);
  border: none;
}

.kopiuj-link {
  border: none;
  background: var(--primary-color);
  color: white;
  padding: 10px 15px;
  cursor: pointer;
}

.podglad-obrazu {
  max-width: 100%;
  max-height: 300px;
  margin: 0 auto;
  display: block;
  border-radius: var(--border-radius);
  object-fit: cover;
}

footer {
  background-color: var(--card-bg);
  padding: 20px;
  text-align: center;
  margin-top: auto;
  transition: var(--transition);
}

/* Responsywność */
@media (max-width: 768px) {
  .szczegoly-pliku {
    grid-template-columns: 1fr;
  }
  
  .pliki-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
  
  .akcje {
    flex-direction: column;
  }
  
  .navbar {
    flex-direction: column;
    gap: 10px;
  }
  
  .info-lista {
    grid-template-columns: 1fr;
  }
  
  .link-container {
    flex-direction: column;
  }
  
  #link-udostepniania {
    margin-right: 0;
    margin-bottom: 10px;
    width: 100%;
  }
  
  .kopiuj-link {
    width: 100%;
  }
  
  .formularz-grupa button {
    width: 100%;
    margin-top: 10px;
  }
}

@media (max-width: 576px) {
  .akcje {
    flex-direction: column;
  }
  
  .akcje a {
    margin-bottom: 10px;
    width: 100%;
  }
  
  .nav-links {
    display: none;
  }
  
  header {
    padding: 0 10px;
  }
}

/* Dodaj te style do istniejącego pliku CSS */

.alert-info {
    background-color: #e6f3ff;
    border-left: 4px solid #2196F3;
    color: #0c5460;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 6px;
}

.progress-container {
    background-color: #f0f0f0;
    border-radius: 8px;
    height: 20px;
    margin: 12px 0;
    overflow: hidden;
    width: 100%;
}

.progress-bar {
    background-color: var(--primary-color);
    height: 100%;
    width: 0;
    transition: width 0.3s ease;
    border-radius: 8px;
}

#progress-percent {
    text-align: center;
    font-weight: bold;
    margin-top: 5px;
}

/* Style dla przycisków wyłączonych */
button:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

button:disabled:hover {
    background-color: #cccccc;
    transform: none;
}

/* Poprawa stylu input file */
input[type="file"] {
    border: 2px dashed #dde0e3;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    border-radius: var(--radius);
    background-color: var(--primary-light);
    transition: all 0.3s ease;
}

input[type="file"]:hover {
    border-color: var(--primary-color);
    background-color: rgba(74, 108, 250, 0.1);
}

.nazwa-pliku {
    margin-top: 10px;
    font-size: 14px;
    color: var(--light-text);
    text-align: center;
}

/* Additional Classes */
.akcje {
  display: flex;
  gap: 10px;
  margin: 20px 0;
}

.nawigacja-powrot {
  margin-top: 30px;
}

.niebezpieczna-strefa {
  margin-top: 40px;
  padding: 20px;
  border: 1px solid var(--error-color);
  border-radius: var(--border-radius);
}

.funkcje ul {
  list-style-position: inside;
  margin: 15px 0;
}

.funkcje li {
  margin-bottom: 8px;
}

/* Sidebar Styles */
.app-container {
  display: flex;
  min-height: calc(100vh - var(--header-height));
}

.sidebar {
  width: var(--sidebar-width);
  background-color: var(--card-bg);
  box-shadow: var(--box-shadow);
  height: calc(100vh - var(--header-height));
  position: fixed;
  top: var(--header-height);
  left: 0;
  overflow-y: auto;
  z-index: 900;
  transition: all 0.3s ease;
  padding: 20px 0;
}

/* Updated header layout */
.naglowek {
  background-color: var(--card-bg);
  box-shadow: var(--box-shadow);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 1000;
  transition: var(--transition);
}

.header-right {
  display: flex;
  align-items: center;
}

.sidebar-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-color);
  cursor: pointer;
  margin-right: 15px;
  transition: var(--transition);
}

.sidebar-toggle:hover {
  color: var(--primary-color);
}

/* Sidebar layout */
.app-container {
  display: flex;
  min-height: calc(100vh - var(--header-height));
  margin-top: var(--header-height);
}

.sidebar {
  width: var(--sidebar-width);
  background-color: var(--card-bg);
  box-shadow: var(--box-shadow);
  height: calc(100vh - var(--header-height));
  position: fixed;
  top: var(--header-height);
  left: 0;
  overflow-y: auto;
  z-index: 900;
  transition: var(--transition);
  padding: 20px 0;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

.sidebar-header {
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
}

.sidebar-header h3 {
  font-size: 1.1rem;
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-header h3 i {
  min-width: 24px;
  text-align: center;
}

.sidebar.collapsed .sidebar-header {
  padding: 20px 0;
  text-align: center;
  display: flex;
  justify-content: center;
}

.sidebar.collapsed .sidebar-header h3 {
  justify-content: center;
}

.sidebar.collapsed .sidebar-header h3 span {
  display: none;
  width: 0;
  opacity: 0;
}

.sidebar-nav ul {
  list-style: none;
  padding: 0;
}

.sidebar-nav li {
  margin-bottom: 5px;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  color: var(--text-color);
  text-decoration: none;
  transition: var(--transition);
}

.sidebar-nav a:hover {
  background-color: var(--primary-light);
  color: var(--primary-color);
}

.sidebar-nav i {
  width: 24px;
  margin-right: 15px;
  font-size: 18px;
  text-align: center;
}

.sidebar-nav span {
  white-space: nowrap;
}

.sidebar.collapsed .sidebar-nav span,
.sidebar.collapsed .sidebar-header h3 span {
  display: none;
}

.sidebar.collapsed .sidebar-nav i {
  margin-right: 0;
}

.separator {
  height: 1px;
  background-color: var(--border-color);
  margin: 15px 20px;
}

#main-content {
  transition: var(--transition);
  width: 100%;
}

#main-content.has-sidebar {
  margin-left: var(--sidebar-width);
  width: calc(100% - var(--sidebar-width));
}

#main-content.expanded {
  margin-left: var(--sidebar-collapsed-width);
  width: calc(100% - var(--sidebar-collapsed-width));
}

/* Responsive sidebar behavior */
@media (max-width: 992px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.collapsed {
    transform: translateX(0);
    width: var(--sidebar-width);
  }
  
  #main-content.has-sidebar {
    margin-left: 0;
    width: 100%;
  }
  
  #main-content.expanded {
    margin-left: 0;
    width: 100%;
  }
}

.tabela-uzytkownikow {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.tabela-uzytkownikow th, .tabela-uzytkownikow td {
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.tabela-uzytkownikow th {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.tabela-uzytkownikow tr:nth-child(even) {
    background-color: var(--gray-color);
}

.tabela-uzytkownikow tr:hover {
    background-color: var(--primary-light);
}